These guys are dead dead.
paying a quarter million dollars to get crushed to death with 4 other dumb broads in a sewer pipe. next time just go to saint tropez
$250,000
takes 12 hours
it's about the size of a king-size bed
no windows
you take turns looking out of a 10" porthole at the faint outline of the shipwreck
if they can find it
sometimes they can't find it
Even if everything did go right and this didn’t sink the idea that anyone would pay $250k to spend TWELVE HOURS IN THIS THING with four other people is fucking insane. I am not claustrophobic at all and this is fully nuts.
Byford Dolphin was an explosion rather than an implosion since the pressure inside the chamber was much higher than the outside pressure, resulting in all the air rushing outwards. So they didn't get crushed like would happen in an implosion, but the end result is equally as gruesome (at least for the one guy by the door).
We may find out what happened eventually, but I think it's likely the vessel failed and if that's the case they all perished within a few milliseconds at those kinds of depths.